In Russian. Livshits, Boris Samoilovich. Textbook on Telephone Messaging Theory. Leningrad: 1970. Uchebnoe posobie po teorii telefonnykh soobshcheniy. In Russian /Textbook on Telephone Message Theory . All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU7155500
In Russian. Livshits, Boris Samoilovich. Development of automatic channel switching systems. Moscow: Communications, 1976. Razvitie sistem avtomaticheskoy kommutatsii kanalov. In Russian /Development of automatic channel switching systems . All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU6939626